awareness for Dockerfile.dockerignore files

[LukasGentele]

Is your feature request related to a problem?
"DevSpace should use the current docker behavior for dockerignore:
Dockerfile + .dockerignore
Dockerfile + Dockerfile.dockerignore
Dockerfile.frontend + Dockerfile.frontend.dockerignore
"

Which solution do you suggest?
Delegating the dockerignore file search to Docker if possible, otherwise copying the behavior as best as possible.

Which alternative solutions exist?

Additional context

Credits to @korbin for suggesting this via Slack.

/kind feature